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Posted to dev@stratos.apache.org by "reka thirunavukkarasu (JIRA)" <ji...@apache.org> on 2014/01/03 06:38:53 UTC

[jira] [Created] (STRATOS-330) GraceFul shutdown for the instances

reka thirunavukkarasu created STRATOS-330:
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             Summary: GraceFul shutdown for the instances
                 Key: STRATOS-330
                 URL: https://issues.apache.org/jira/browse/STRATOS-330
             Project: Stratos
          Issue Type: Improvement
          Components: Cartridge Agent, Stratos Manager
    Affects Versions: 4.0.0 M5
            Reporter: reka thirunavukkarasu
            Assignee: reka thirunavukkarasu
             Fix For: 4.0.0 Alpha


When an instance gets terminated via autoscaler in the case of scale down or unsubscribe, it is required to clean up the data in the instance before performing the actual termination of the instance. In order to achieve this with stratos:

* Autoscaler will call the SM to notify the termination to the instances
* SM will send the notification to the specific instance via instance.notifier topic.
* Instance will receive the event and perform the cleanup task and then send another event as ReadyToTerminate to instance.status topic
* CC will receive the event and terminate the instance.



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